Vacuum supporting device.



R. HZAZELRIGG.

VACUUM SUPPORTING DEVICE.

APPLICATION FILED MAR.6, 1909.

998,9" Yrafizanted 1911.

Q/Vi 1'41 asses ROSS HAZELRIGG. 0F OAKLAND. CALIFORNIA, ASSIGNOIL BYDIRECT AND MESNE AS- SIGNMENTS, TO VACO MANUFACTURING COMPANY, ACORPORATION OF CALI- PORN IA.

VACUUM SUPPORTING DEVICE.

Specification of Letters Patent.

Application filed March 6, 1909.

Patented May 30, 1911.

Serial No. 481.855.

which will tend to makea firm and rigid engagement between the vacuumcup and the surface to which the same is attached.

In carrying out the invention as generally stated above. itisconten'iplatcd employing a vacuum cup which carries spring arms the endsof which engage with the surface to which the cup is attached and exerta pressure which distends the vacuum chamber of the cup so as toincrease the vacumn space of said chamber and thereby cau a more firmand lasting adherence bet ..cen the cup and the surface to which it isattached.

It will be understood, of course that the invention in its practicalapplication is susceptible of structural changes and variations ofdetails, one preferred and practical example of which is shown in theaccompanying drawings, wherein Figure 1 is a front view of the improvedvacuum supporting device, showing the same in engagement with a window.Fig. 2 is a vertical sectional view thereof. Fig. 3 is a perspectiveview of the vacuum cup detached from its supporting and distendingspring arms. Fig. 4 is a bottom plan View of the distending spring arms.

Referring to the said drawings by numerals. 1 designates the vacuum cup,Which may be of the chambered shape shown with the material of its bodytapering to its outer edge, or of any other suitable or preferred shape,the object being to provide a vacuum chamber 2 from which the air isexpelled by compressing the cup, after which it is permitted to expandto its normal position or shape while held in contact with the smoothsurface to which it is to be attached, in a manner well understood. Thetapering formation of the body 1 is preferred, as it greatly facilitatesthe compressing, or bringing together of the edges 3 of the chamber 2.

The body 1 is provided with a centrally located outstanding, preferablyintegral, head 4 which may be in the shape of a cylinder, and which isadapted to be forced through an opening centrally located in the body 6which is provided with a pair of oppositely projecting integral arms 7and 8. Said arms and the bod are preferably stamped from a single pieceof sheet metal and the central. opening 5 of the body is punched and itsedges are preferably left in an un tinishcd state so that they willreadily bite into the material of the head of the cup 1. The spring armsbulge outwardly at their intermediate portions as indicated at 9 toimpart resiliency thereto. The ends of the arms project beyond the edgeof the vacuum cup, so that when said arms are in contact with thesurface to which the cup is attached, a lifting pressure will be exertedupon the cup, which increases the vacuum space of the vacuum chamber insuch a manner as to assure of a more firm engagement between the cup andthe window or other surface to which the cup is attached. The arm 8 hasits end portion which contacts with the window or other surface roundedand outturned to form a suspending hook it), by means of which articlesmay be held in a suspended condition. The other arm 7 is provided with adownturned sharpened point 11 which may penetrate an article so as tohold the same between the end of the arm and the surface to which saidarm is in contact. It will also be understood that the rounded portionof the arm 8 serves as a clamp to hold an article in engagement with thesurface to which the cup is attached. Preferably the sides of the armshave their edges upturned as indicated at 12 which imparts strengththereto.

It will be seen from the foregoing that the cup may be readily formed ofrubber or equivalent material molded into the desired shape, and thatthe arms may be readily stamped from a single piece of material, thusgreatly cheapening the production of the device.

Vhat I claim as my invention is 1. A device of the character described,comprising a vacuum cup provided with a centrally-located, outstandinghead, a body attached to said head and provided with'oppositely-disposed spring arms, adapted to contact with the surface towhich the cup is attached to distend said cu and -a sus-i pending hookcarried by one said arms,

2. A- device of the character described comprising a vacuum 'cupvadapted for en gagement with a smooth surface, and spring arms havingrigid connection-with the cup, the free ends of-said' arms being adaptedto contact with the surface'to which the cup is attached and lift thecenter-"0f said cup to increase its holdin force, said arms beingprovided, respective y with a suspending hook and a penetrating hook.

, 3.'A dev1ce of the character described comprising a vacuum cup havinga body which tapers to its outer edge and a cen trally locatedoutstanding. head, and a body 4. A vacuum suspending device compris f mga vacuum cup having a centrally lo engagement with the head o the on,and' ,spring arms integral with the meta body and each provided wit-hahook s hap ed end adapted to contact with the surface to which the cupisattached-and exert a lif ting;p' ressure on thecentral portion of thecup to increase the vacuum space of the same.

.5. A device of therharactehdesribed, comprising a vacuum cup, "a inetal 'b qdy mounted on said cup, and opposite1y -p ro'- jecting springarmsccarried by 'said'lio dy, and adapted to contact with the surface towhich the cup is attached and thereby increase the vacuumspace of saidcup, one of said arms beingprovided with a penetrating hook and theother with asuspending hooin In testimony whereof Ihereunto aflix mysignature in presence of two'witnessesl'.

. ;HA E R Gs-- Witnes'sesf v H. O. SoHnoEn R', F P. Sor'n'zoEDER.

